US surpasses 2025’s record number of measles infections as cases climb

The US has recorded 2,318 measles cases in 2026, surpassing the 2025 total of 2,289 and marking the highest count since the disease was declared eliminated in 2000. This makes 2026 the worst year for measles in the US since 1991, with large outbreaks in South Carolina, Utah, and Arizona. International officials will consider revoking the US and Mexico's measles-free status in November due to declining vaccination rates falling below the 95% threshold needed to prevent outbreaks. Experts attribute the rise to decreased vaccination coverage and suggest a nationwide effort to increase rates is needed, though this appears unlikely given the current administration's stance on immunizations. The American Academy of Pediatrics described the surge as an "avoidable crisis" disproportionately affecting children.

The United States has recorded 2,318 measles cases in 2026, exceeding the previous year's record of 2,289 cases with five months remaining. Scientists warn that declining vaccination rates are leaving vulnerable groups, particularly young children, more exposed to the disease. This resurgence marks the country's worst year for measles outbreaks since 1991, with significant outbreaks occurring in states like South Carolina, Utah, and Arizona. Experts note that reported figures are likely an underestimate, as they depend on individuals seeking testing and sharing information. A 95 percent community vaccination rate is necessary to prevent such outbreaks, but national vaccination rates for kindergartners dropped to 92.5 percent in the 2024-2025 school year.